Despite uncertainty regarding trade and the potential impact of Brexit, U.S. companies are bullish on international business and emerging market opportunities, according to the fourth annual Wells Fargo International Business Indicator. Citing a number of macroeconomic factors, including a strong U.S. dollar and U.S. economic conditions, 81 percent of U.S. companies expect their international business activity to increase during the next 12 months, up from 64 percent in 2016. Despite an increase in overall optimism, U.S. companies are concerned about trade and potential changes to existing trade pacts, with 86 percent of survey respondents agreeing that the failure of trade pacts will affect their business somewhat or a great deal. A majority of U.S. companies don't expect Brexit to affect their business in the region, with only one-third saying Brexit would affect their business.